Fuel Tank move\replace help

I am not sure this is the right palce to post this, but here goes... I have a '71 Chevy C10 P/U that I am doing a frame off resto on. I love these trucks but have always hated the gas tank behind the seat. I would like to here opinions or ideas about how and where to move the tank....perhaps replace it with a fuel cell. This truck is going to be near show qaulity (I hope) when I am finished, but it is also going to be a driver. I told my wife it will be our "Date Truck", so I am not sure a small fuel cell is going to work, since I am installing a 427 that is mildly hopped up....7 MPG will have me stopping at every gas station in town with a 8-10 gallon cell.

Anyway, if anyone knows of a good source of info, or a vendor that specializes in this sort of thing, I would appreciate the info.

cool...

Here is what I am planning to do to my 67. Its a rear mount tank under the bed thats still 21 gallons and works with the factory gas guage. I was planning to run the filler line up to the top of the bed rail.

3 years ago a friend off mine did a frame off on a 69 c10. Mounted a 20 gal fuel cell right behind the rear axle. has a wood foor in the box and he left a hole right at the cap of the cell. looks really clean. He has been drivin the truck since and it has some hard miles(4 sets of rear tires) never had a problem